Hugh Bachman, coach of the U.S. men’s Olympic volleyball team and his wife, Elisabeth Bachman McCutcheon, a former Olympic athlete, spoke out in an open letter about the death of Elisabeth’s father and injuries of her mother who were attacked Saturday at a tourist attraction in Beijing.

The attack killed Todd Bachman and critically injured his wife Barbara, both 62. Barbara was recently upgraded from critical to serious but stable at a Beijing hospital.

“We are extremely grateful for the outpouring of assistance and generosity that we have received and hope to convey our appreciation to everyone who has supported us and kept us in their thoughts and prayers,” the letter reads. It goes on to individually thank family, friends, Olympians, officials and President Bush for their support through the weekend.

“This letter cannot do justice in acknowledging the love and support we’ve felt,” they wrote. “We have been lifted up by the outpouring of support and love we’ve received from around the world.”

The 28 Bachman’s home and garden stores in Minnesota, of which Todd Bachman was chairman and CEO, are displaying posters and memorials for their fallen leader.